CN107406036A - Electronic mirror device - Google Patents

Electronic mirror device Download PDF

Info

Publication number
CN107406036A
CN107406036A CN201680018484.XA CN201680018484A CN107406036A CN 107406036 A CN107406036 A CN 107406036A CN 201680018484 A CN201680018484 A CN 201680018484A CN 107406036 A CN107406036 A CN 107406036A
Authority
CN
China
Prior art keywords
wave filter
photocontrol
image
display part
control unit
Prior art date
Application number
CN201680018484.XA
Other languages
Chinese (zh)
Other versions
CN107406036B (en
Inventor
大河平隆
Original Assignee
松下知识产权经营株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2015-070857 priority Critical
Priority to JP2015070857A priority patent/JP6464479B2/en
Application filed by 松下知识产权经营株式会社 filed Critical 松下知识产权经营株式会社
Priority to PCT/JP2016/001424 priority patent/WO2016157767A1/en
Publication of CN107406036A publication Critical patent/CN107406036A/en
Application granted granted Critical
Publication of CN107406036B publication Critical patent/CN107406036B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/02Rear-view mirror arrangements
    • B60R1/08Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
    • B60R1/083Anti-glare mirrors, e.g. "day-night" mirrors
    • B60R1/088Anti-glare mirrors, e.g. "day-night" mirrors using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/02Rear-view mirror arrangements
    • B60R1/04Rear-view mirror arrangements mounted inside vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • B60R1/1207Mirror assemblies combined with other articles, e.g. clocks with lamps; with turn indicators
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153Constructional details
    • G02F1/1533Constructional details structural features not otherwise provided for
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153Constructional details
    • G02F1/157Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1223Mirror assemblies combined with other articles, e.g. clocks with sensors or transducers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1253Mirror assemblies combined with other articles, e.g. clocks with cameras, video cameras or video screens
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/44Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00Specific applications
    • G09G2380/10Automotive applications

Abstract

Even in photocontrol wave filter be in switch from light reflection state to light transmission state it is transitional in the case of, be also prevented from being not easily seen the situation of the image shown on the display part at the back side of photocontrol wave filter.The display part of electronic mirror device shows the image photographed by the image pickup part for being equipped on vehicle, photocontrol wave filter is arranged on the position that driver's seat side is leaned on than display part, makes the light reflection state of light reflection according to the state of energization and is making to carry out state switching between light transmissive light transmission state.Control unit is controlled to display part and photocontrol wave filter, photocontrol wave filter be in light transmission state situation and photocontrol wave filter be in switch from light reflection state to light transmission state it is transitional in the case of, control unit makes display part show image, in the case of photocontrol wave filter is in transitional, control unit, which performs, to be in the situation of light transmission state compared to photocontrol wave filter and makes to be shown in the control that at least a portion of the image on display part brightens.

Description

Electronic mirror device

Technical field

The present invention relates to a kind of electronic mirror device of image for showing and being photographed by the image pickup part for being equipped on vehicle etc..

Background technology

In the past, in order to reduce the dazzle caused by the headlamp of rear car, and be make use of in mirror of vehicle etc. by that can reduce The photocontrol wave filter that the electrochromic material of reflectivity is formed.

As one of this electrochromism technology, for example, Patent Document 1 discloses one kind improve photocontrol and The electrochromic rearview of the speed of transparence.

In addition, Patent Document 2 discloses one kind according to "on" position come light reflection state and light transmission state it Between carry out state switching photocontrol wave filter.

Patent document 1:Japanese Unexamined Patent Publication 2012-168554 publications

Patent document 2:Japanese Unexamined Patent Publication 2012-181389 publications

The content of the invention

It is in it is an object of the invention to provide one kind even in photocontrol wave filter from light reflection state to light transmission shape State switching it is transitional in the case of can also prevent from being not easily seen on the display part at the back side of photocontrol wave filter show The electronic mirror device of the image shown.

The electronic mirror device of the present invention has display part, photocontrol wave filter and a control unit, display part can show by It is equipped on the image that the image pickup part of vehicle photographs.Photocontrol wave filter is arranged on the position that driver's seat side is leaned on than display part, root Make the light reflection state of light reflection according to the state of energization and making to carry out state switching between light transmissive light transmission state.Control Portion processed is controlled to display part and photocontrol wave filter.The situation of light transmission state and light-operated is in photocontrol wave filter Wave filter processed be in switch from light reflection state to light transmission state it is transitional in the case of, control unit make display part display shadow Picture, in the case of photocontrol wave filter is in transitional, control unit performs is in light transmission shape compared to photocontrol wave filter The situation of state makes to be shown in the control that at least a portion of the image on display part brightens.

According to the present invention, the transitional period switched from light reflection state to light transmission state is in even in photocontrol wave filter In the case of, it can also prevent from being not easily seen the feelings of the image shown on the display part in the back side of photocontrol wave filter Shape.

Brief description of the drawings

Fig. 1 is to represent to be equipped with the figure of one of the vehicle of the electronic mirror device involved by embodiments of the present invention 1.

Fig. 2 is the figure of one of the structure for representing the electronic mirror device shown in Fig. 1.

Fig. 3 is to represent photocontrol wave filter involved by embodiment 1 from light reflection state to light transmission state change In the case of light reflectivity and light transmission passage the figure of one.

Fig. 4 is the figure of the control method for the brightness for illustrating the backlight involved by embodiment 1.

Fig. 5 is the figure of the control method for the gamma value for illustrating the liquid crystal display involved by embodiments of the present invention 2.

Fig. 6 is the figure of the control method for the contrast for illustrating the liquid crystal display involved by embodiments of the present invention 3.

Embodiment

Before embodiments of the present invention are illustrated, the problem of point in conventional device is simplyd illustrate.Even if improve Electrochromic material is changed into transparent speed, also not developing currently electrochromic material moment can be made to be changed into transparent Technology.

Therefore, even if wanting to see the image at the back side in electrochromic material, also due in electrochromic material being changed into The transmitted light by the reflected light of electrochromic material reflection and the back side from electrochromic material during before bright be present, and It is not easily seen the image at the back side in electrochromic material.

Hereinafter, embodiments of the present invention are described in detail with reference to accompanying drawings.In addition, embodiments described below is one Example, the present invention are not limited to these embodiments.

(embodiment 1)

Fig. 1 is the figure of one of the vehicle 1 for representing to be equipped with the electronic mirror device 5 involved by embodiments of the present invention 1. Front stall (driver's seat and co-pilot seat) 3 is configured with the front of the inside 2 of vehicle 1, back seat 4 is configured with rear.

Also, the installed position of the Room Mirror (room mirror) in the front of front stall 3, with relative to the energy of installation portion 6 The mode for enough adjusting setting angle is provided with electronic mirror device 5.In addition, the rear of shooting vehicle 1 is provided with the rear of back seat 4 Image pickup part 7.

Here, electronic mirror device 5 can show rear images of vehicle 1 photographed by image pickup part 7 etc..In addition, electronics Wire communication or radio communication are carried out between lens device 5 and image pickup part 7, by from the image that image pickup part 7 photographs from image pickup part 7 to Electronic mirror device 5 is sent.

Fig. 2 is the figure of one of the structure for representing the electronic mirror device 5 shown in Fig. 1.

As shown in Fig. 2 electronic mirror device 5 has:Main body cover 51, it has opening portion in the side of front stall 3;Display part 52, It is the liquid crystal display being accommodated in a manner of display surface is in the side of front stall 3 in main body cover 51;And photocontrol wave filter 53, it is arranged on the side of front stall 3 of display part 52.Electronic mirror device 5 also has:Operating portion 54, it makes display part 52 to open (ON) state or closing (OFF) state;Illuminance transducer 55, it detects the lightness of the inside 2 of vehicle 1;Temperature sensor 56, It detects the temperature of the inside 2 of vehicle 1;Storage part 57, it stores the setting value of the brightness of the backlight in display part 52, to light Control the various information such as the setting value of voltage of the application of wave filter 53;And control unit 58, it is filtered to display part 52 and photocontrol Ripple device 53 is controlled.

Photocontrol wave filter 53 is to make the light reflection state that light reflects with making light transmissive light according to the state of energization The equipment that state switching is carried out between transmissive state.Such as describe such photocontrol filter in detail in the grade of patent document 2 Ripple device 53.

Control unit 58 is controlled to display part 52 and photocontrol wave filter 53.Specifically, in photocontrol wave filter 53 Situation and photocontrol wave filter 53 in light transmission state are in the transition switched from light reflection state to light transmission state In the case of phase, control unit 58 makes display part 52 show image.Below, the control is described in more detail.

When it is closed mode that the operation by operating portion 54, which makes display part 52, control unit 58 is adjusted to photocontrol wave filter 53 voltages applied, to make photocontrol wave filter 53 be that the light that reflectivity is more than 50% (preferred reflectance is more than 80%) is anti- Penetrate state.In this condition, photocontrol wave filter 53 plays the effect as mirror.Thus, driver can be by reflecting light-operated Picture on wave filter 53 processed confirms to rear.

On the other hand, when it is opening that the operation by operating portion 54, which makes display part 52, control unit 58 is adjusted to light The voltage for controlling wave filter 53 to apply, to make photocontrol wave filter 53 be that transmissivity is more than 50% (preferred transmission rate is 80% More than) light transmission state.In this condition, photocontrol wave filter 53 transmits the image shown on display part 52.Now, drive Member can be confirmed by the rear images of the vehicle 1 shown on display part 52 to rear.

In addition, the transitional situation switched from light reflection state to light transmission state is in photocontrol wave filter 53 Under, control unit 58, which performs, to be in the situation of light transmission state compared to photocontrol wave filter 53 and makes the shadow being shown on display part 52 As the control to brighten.

Specifically, photocontrol wave filter 53 be in it is above-mentioned it is transitional in the case of, control unit 58 by with compared to Controlled in the mode that photocontrol wave filter 53 is in the situation of light transmission state and makes the lightness of the backlight of display part 52 brighten Backlight, to make the image being shown on display part 52 brighten.

Here, explain the control that control unit 58 is carried out to display part 52.

Fig. 3 is the light reflectivity in the case of representing photocontrol wave filter 53 from light reflection state to light transmission state change With the figure of one of the passage of light transmission.Fig. 3 longitudinal axis represents reflectivity (%) or transmissivity (%), and transverse axis is represented from stopping Apply the elapsed time (second) that voltage rises to photocontrol wave filter 53.

As shown in figure 3, when stopping applying voltage to photocontrol wave filter 53, light transmission increase, light reflectivity is reduced. It is the transitional period that photocontrol wave filter 53 switches from light reflection state to light transmission state during this period.Afterwards, photocontrol wave filter 53 are changed into light transmission state.

Here, the curve of light reflectivity and the curve of light transmission intersected the time point of substantially 10 seconds.When more than this During time point, the influence that reflection of the photocontrol wave filter 53 to light is brought for the visuality of image diminishes, therefore control unit 58 As long as persistently enter to exercise control that image brightens untill the time point.

In addition, here, the time point of the curve of light reflectivity and the curve intersection fork of light transmission is set as substantially 10 seconds Time point, but the difference of the species according to photocontrol wave filter 53, there is also the curve of light reflectivity and the song of light transmission Situation of the time point that line intersects earlier than 10 seconds.

And, control unit 58 persistently enters to exercise the curve and light that control up to light reflectivity that image brightens in this case Untill the time point of the curve intersection fork of transmissivity.

Fig. 4 is the figure of the control method for the brightness for illustrating backlight.Fig. 4 longitudinal axis represents that the brightness of backlight is (relative Value), transverse axis represents the elapsed time (second) from stopping applying voltage to photocontrol wave filter 53.

For example, in curve A, the brightness from stopping applying voltage to photocontrol wave filter 53 after 20 seconds is pre- First be set as photocontrol wave filter 53 be in light transmission state in the case of brightness.

In this case, control unit 58 so that the brightness of backlight with being preset as by the brightness after 20 seconds Brightness control backlight compared to the mode for becoming big such as 30% or so, until from stopping applying voltage to photocontrol wave filter 53 Rise untill passing through 10 seconds.

Thus, because backlight is from rear side irradiating liquid crystal, therefore the image being shown on display part 52 brightens, image quilt Enhancing, therefore can prevent from being not easily seen image due to the influence of the reflection in photocontrol wave filter 53.

Also, control unit 58 makes the bright of image after entering to exercise control time point as defined in that image brightens Degree is gradually varied to the defined lightness in the case that photocontrol wave filter 53 is in light transmission state.

Specifically, in curve A in Fig. 4, control unit 58 perform the brightness that makes backlight become big control until After 10 seconds, the brightness of backlight is set gradually to be reduced to the defined brightness after 20 seconds.

Thereby, it is possible to prevent from making driver not feel like oneself due to the drastically change of the lightness of image.

It is to be noted that control unit 58 determines to terminate to make the bright of backlight according to the temperature of the inside 2 of vehicle 1 Degree becomes the time point (being in the example in fig. 4, the time point of 10 seconds from stopping applying voltage) of big control, performs above-mentioned Control is until untill the time point.Because the characteristic shown in Fig. 3 changes according to the temperature of the inside 2 of vehicle 1.

In this case, such as storage part 57 in advance makes end in the letter at the time point of the big control of the brightness change of backlight Breath accordingly stores with the temperature of the inside 2 of vehicle 1.Then, control unit 58 obtains the temperature detected by temperature sensor 56 The information of degree, the information at above-mentioned time point corresponding with the temperature is read from storage part 57.

Then, control unit 58 performs the control for making the brightness change of backlight big untill the time point, makes backlight afterwards The brightness of lamp gradually reduces.Thereby, it is possible to suitably adjust to carry out time of above-mentioned control.

Also, it can also be set to, control unit 58 performs following control:As the lightness of the inside 2 of vehicle 1 is dimmed, subtract The weak degree for making the image being shown on display part 52 brighten.Here, the bright of the inside 2 of vehicle 1 is detected by illuminance transducer 55 Brightness.

For example, figure 4 illustrates curve A~D, ratio by the brightness before 10 seconds and the brightness after 20 seconds according to Curve A, B, C, D order taper into.Here, the brightness after 20 seconds is in light transmission equivalent to photocontrol wave filter 53 Brightness in the case of state, it is in saturating from light reflection state to light equivalent to photocontrol wave filter 53 by the brightness before 10 seconds Penetrate state switching it is transitional in the case of brightness.

In this case, control unit 58 with the illumination detected by illuminance transducer 55 diminish and with from curve A switch Curve C is switched to for curve B, from curve B, is switched to from curve C in the control of the brightness that curve D mode switches in backlight The curve used.

For example, in the case of being night in the period or in the case that vehicle 1 is travelled in tunnel, more than vehicle 1 Inside 2 is dark, and the image shot by image pickup part 7 is also dark, so if making the brightness of backlight become greatly to strengthen image, then Image is caused to brighten artificially.

In addition, even photocontrol wave filter 53 is not completely transformed into the situation of light transmission state, in the inside of vehicle 1 2 it is dark when, the reflected light from photocontrol wave filter 53 is also small on being influenceed caused by the visibility of image, therefore makes the bright of backlight The necessity that degree becomes greatly to strengthen image is also low.

Based on such situation, control unit 58 is with as the illumination detected by illuminance transducer 55 diminishes and makes above-mentioned Mode than diminishing controls backlight.Thereby, it is possible to prevent image from brightening artificially, and consumption electric power can also be reduced.

(embodiment 2)

In above-mentioned embodiment 1, control unit 58 makes image brighten by controlling the backlight of display part 52, still Can also be by making the gamma value of display part 52 reduce to make image brighten.

In the present embodiment, the situation that control unit 58 reduces the gamma value of display part 52 is illustrated.Here, display part 52 It is not limited to liquid crystal display or organic EL (Electro-Luminescence:Electroluminescent) display etc. is other The display of species.

Fig. 5 is the figure for the control method for illustrating gamma value.Fig. 5 longitudinal axis represents gamma value, and transverse axis is represented from stopping to light Wave filter 53 is controlled to apply the elapsed time (second) that voltage rises.

For example, in curve E, the gamma value from stopping applying voltage to photocontrol wave filter 53 after 20 seconds is pre- First be set as photocontrol wave filter 53 be in light transmission state in the case of gamma value.In the example of fig. 5, the gamma value is 2.2。

In this case, control unit 58, which performs, makes the gamma value control smaller than above-mentioned gamma value set in advance, Zhi Daocong Stop applying photocontrol wave filter 53 voltage by untill 10 seconds.In the example of fig. 5, the gamma value is 1.5.

Thus, the image being shown on display part 52 is brightened, and image is enhanced, therefore can be prevented because photocontrol filters The influence of reflection in device 53 and be not easily seen image.

Also, control unit 58 makes the bright of image after entering to exercise control time point as defined in that image brightens Degree is gradually varied to the defined lightness in the case that photocontrol wave filter 53 is in light transmission state.

Specifically, in curve E in Figure 5, control unit 58 is performing the control for reducing gamma value until by 10 After second, gamma value is set gradually to increase for the defined gamma value after 20 seconds.

Thereby, it is possible to prevent from making driver not feel like oneself due to the drastically change of the lightness of image.

It is to be noted that control unit 58 determines that end reduces gamma value according to the temperature of the inside 2 of vehicle 1 Control time point (in the example of fig. 5, be from stop apply voltage the time point of 10 seconds), it is straight to perform above-mentioned control Untill the time point.Because the characteristic shown in Fig. 3 changes according to the temperature of the inside 2 of vehicle 1.

In this case, such as storage part 57 will terminate to make the information and car at the time point of the control of gamma value reduction in advance The temperature of 1 inside 2 accordingly stores.Then, control unit 58 obtains the letter of the temperature detected by temperature sensor 56 Breath, the information at above-mentioned time point corresponding with the temperature is read from storage part 57.

Then, control unit 58 performs the control for reducing gamma value untill the time point, makes gamma value gradual afterwards Increase.Thereby, it is possible to suitably adjust to carry out time of above-mentioned control.

Also, it can also be set to, control unit 58 performs following control:As the lightness of the inside 2 of vehicle 1 is dimmed, subtract The weak degree for making the image being shown on display part 52 brighten.Here, the bright of the inside 2 of vehicle 1 is detected by illuminance transducer 55 Brightness.

For example, figure 5 illustrates curve E~H, by the gamma value before 10 seconds according to curve E, F, G, H order by Gradual change is big.Here, it is in by the gamma value before 10 seconds equivalent to photocontrol wave filter 53 from light reflection state to light transmission shape State switching it is transitional in the case of gamma value.

In this case, control unit 58 with the illumination detected by illuminance transducer 55 diminish and with from curve E switch Curve G is switched to for curve F, from curve F, switches to curve H mode to switch in the control of gamma value what is used from curve G Curve.

For example, in the case of being night in the period or in the case that vehicle 1 is travelled in tunnel, more than vehicle 1 Inside 2 is dark, and the image shot by image pickup part 7 is also dark, so if making gamma value reduce to strengthen image, then causes shadow As brightening artificially.

In addition, even photocontrol wave filter 53 is not completely transformed into the situation of light transmission state, in the inside of vehicle 1 2 it is dark when, the reflected light from photocontrol wave filter 53 is also small on being influenceed caused by the visibility of image, therefore reduces gamma value It is also low come the necessity that is strengthened image.

Based on such situation, control unit 58 is by performing as the illumination detected by illuminance transducer 55 diminishes and such as It is above-mentioned gamma value is become big control like that, it can prevent image from brightening artificially.

(embodiment 3)

In above-mentioned embodiment 2, it is set to make the gamma value of display part 52 to reduce, but can also be set to by making shadow The contrast of picture becomes greatly to make at least a portion of image brighten.

In the present embodiment, the contrast on making image becomes big situation and illustrated.Here, display part 52 is unlimited Due to other species such as liquid crystal display or organic EL (Electro-Luminescence, electroluminescent) display Display.

Fig. 6 is the figure for the control method for illustrating contrast.Fig. 6 longitudinal axis represents the output valve of image, and transverse axis represents image Input value.

For example, curve i makes from stopping applying voltage to photocontrol wave filter 53 in a period of by untill 10 seconds With curve M uses from stopping applying voltage to photocontrol wave filter 53 to after by 20 seconds.

When carrying out generation using curve i during by untill 10 seconds from stopping applying voltage to photocontrol wave filter 53 During for curve M, in the big region of input value, output valve turns into maximum 255.

Thus, at least a portion for the image being shown on display part 52 is brightened, and image is enhanced, thus can prevent by The influence of reflection in photocontrol wave filter 53 and be not easily seen image.

Also, control unit 58 be controlled display part 52 until after defined time point, makes the bright of image Brightness is gradually varied to the defined lightness in the case that photocontrol wave filter 53 is in light transmission state.

Specifically, in curve i~M in figure 6, the contrast that control unit 58 enters to exercise image using curve i becomes big Correction so that at least a portion of image brightens, untill by 10 seconds, and to from stopping to photocontrol wave filter 53 During applying voltage untill curve M was used after 20 seconds, carry out pair of correcting image using curve K and curve L successively Degree of ratio.

Thereby, it is possible to prevent from making driver not feel like oneself due to the drastically change of the lightness of image.

It is to be noted that control unit 58 determines that end makes contrast become big according to the temperature of the inside 2 of vehicle 1 Control time point (in above-mentioned example, be from stop apply voltage the time point of 10 seconds), perform above-mentioned control Untill the time point.Because the characteristic shown in Fig. 3 changes according to the temperature of the inside 2 of vehicle 1.

In this case, such as storage part 57 in advance makes end the information and car at the time point of the big control of contrast change The temperature of 1 inside 2 accordingly stores.Then, control unit 58 obtains the letter of the temperature detected by temperature sensor 56 Breath, the information at above-mentioned time point corresponding with the temperature is read from storage part 57.

Then, control unit 58 performs the control for making contrast change big untill the time point, makes contrast gradual afterwards Reduce.Thereby, it is possible to suitably adjust to carry out time of above-mentioned control.

Also, it can also be set to, control unit 58 performs following control:As the lightness of the inside 2 of vehicle 1 is dimmed, subtract The weak degree for making the image being shown on display part 52 brighten.Here, the bright of the inside 2 of vehicle 1 is detected by illuminance transducer 55 Brightness.

For example, figure 6 illustrates curve i~M, control unit 58 diminishes with the illumination detected by illuminance transducer 55 And switched in a manner of switching to curve K from curve i, curve L is switched to from curve K, switch to curve M from curve L by The curve used in the contrast correction of image before 10 seconds.

For example, in the case of being night in the period or in the case that vehicle 1 is travelled in tunnel, more than vehicle 1 Inside 2 is dark, and the image shot by image pickup part 7 is also dark, so if making contrast become greatly to strengthen image, then causes to produce The part that raw image brightens artificially.

In addition, even photocontrol wave filter 53 is not completely transformed into the situation of light transmission state, in the inside of vehicle 1 2 it is dark when, the reflected light from photocontrol wave filter 53 is also small on being influenceed caused by the visibility of image, therefore contrast is become big It is also low come the necessity that is strengthened image.

Based on such situation, control unit 58 is by performing as the illumination detected by illuminance transducer 55 diminishes and such as The above-mentioned control for like that reducing contrast, can prevent image from brightening artificially.

Industrial applicability

Present invention is suitably applied to show the electronic mirror device of the image photographed by the image pickup part for being equipped on vehicle etc..

Description of reference numerals

1:Vehicle;2:It is internal;3:Front stall;4:Back seat;5:Electronic mirror device;6:Installation portion;7:Image pickup part;51:Outside main body Shell;52:Display part;53:Photocontrol wave filter;54:Operating portion;55:Illuminance transducer;56:Temperature sensor;57:Storage part; 58:Control unit.

Claims (9)

1. a kind of electronic mirror device, possesses:
Display part, it shows the image photographed by the image pickup part for being equipped on vehicle;
Photocontrol wave filter, it is arranged on the position that driver's seat side is leaned on than the display part, makes light according to the state of energization The light reflection state of reflection and make to carry out state switching between light transmissive light transmission state;And
Control unit, it is controlled to the display part and the photocontrol wave filter,
Wherein, the photocontrol wave filter be in the light transmission state situation and the photocontrol wave filter be in from The light reflection state to the light transmission state switch it is transitional in the case of, the control unit shows the display part The image,
The photocontrol wave filter be in it is described it is transitional in the case of, the control unit performs to be filtered compared to the photocontrol The control that at least a portion for the image that the situation that ripple device is in the light transmission state makes to be shown on the display part brightens.
2. electronic mirror device according to claim 1, it is characterised in that
The control unit is carrying out the control until after defined time point, makes at least one of bright of the image Degree is gradually varied to the defined lightness in the case that the photocontrol wave filter is in the light transmission state.
3. electronic mirror device according to claim 2, it is characterised in that
Time point as defined in described is the reflectivity of the photocontrol wave filter and transmissivity is roughly the same time point.
4. electronic mirror device according to claim 2, it is characterised in that
Time point as defined in described be at the beginning of the transitional period time point of less than 10 seconds.
5. electronic mirror device according to claim 1, it is characterised in that
The control unit determines to terminate the time point of the control according to the temperature in compartment, perform the control until this when Between put untill.
6. electronic mirror device according to claim 1, it is characterised in that
The display part is liquid crystal display, possesses the backlight from the rear side irradiating liquid crystal of the display part,
The photocontrol wave filter be in it is described it is transitional in the case of, the control unit compared with the photocontrol filter The situation that ripple device is in the light transmission state improves the brightness of the backlight to perform the control.
7. electronic mirror device according to claim 1, it is characterised in that
The photocontrol wave filter be in it is described it is transitional in the case of, the control unit compared with the photocontrol filter The situation that ripple device is in the light transmission state reduces the gamma value in the display part to perform the control.
8. electronic mirror device according to claim 1, it is characterised in that
The photocontrol wave filter be in it is described it is transitional in the case of, the control unit compared with the photocontrol filter The situation that ripple device is in the light transmission state makes the contrast of the image increase to perform the control.
9. electronic mirror device according to claim 1, it is characterised in that
The control unit performs following control:As the lightness in compartment is dimmed, weaken at least a portion for making the image The degree to brighten.
CN201680018484.XA 2015-03-31 2016-03-14 Electronic mirror device CN107406036B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2015-070857 2015-03-31
JP2015070857A JP6464479B2 (en) 2015-03-31 2015-03-31 Electronic mirror device
PCT/JP2016/001424 WO2016157767A1 (en) 2015-03-31 2016-03-14 Electron mirror apparatus

Publications (2)

Publication Number Publication Date
CN107406036A true CN107406036A (en) 2017-11-28
CN107406036B CN107406036B (en) 2019-10-15

Family

ID=57004092

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201680018484.XA CN107406036B (en) 2015-03-31 2016-03-14 Electronic mirror device

Country Status (5)

Country Link
US (1) US10391942B2 (en)
EP (1) EP3260328A4 (en)
JP (1) JP6464479B2 (en)
CN (1) CN107406036B (en)
WO (1) WO2016157767A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602962A2 (en) * 1992-12-15 1994-06-22 Donnelly Corporation Display for automatic rearview mirror
JPH07266928A (en) * 1994-03-29 1995-10-17 Araco Corp Rearview mirror
US5883605A (en) * 1992-02-25 1999-03-16 Gentex Corporation Automatic electrochromic control of light level of vacuum fluorescent display
JP2004294647A (en) * 2003-03-26 2004-10-21 Sharp Corp Display element
US20100097469A1 (en) * 2008-10-16 2010-04-22 Magna Mirrors Of America, Inc. Interior mirror assembly with display
JP2012006593A (en) * 2000-11-06 2012-01-12 Semiconductor Energy Lab Co Ltd Vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100932776B1 (en) 2003-05-06 2009-12-21 젠텍스 코포레이션 A vehicle rearview assembly that combines the elements of these elements
JP2012181389A (en) 2011-03-02 2012-09-20 Chiba Univ Display device
US8879139B2 (en) * 2012-04-24 2014-11-04 Gentex Corporation Display mirror assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883605A (en) * 1992-02-25 1999-03-16 Gentex Corporation Automatic electrochromic control of light level of vacuum fluorescent display
EP0602962A2 (en) * 1992-12-15 1994-06-22 Donnelly Corporation Display for automatic rearview mirror
JPH07266928A (en) * 1994-03-29 1995-10-17 Araco Corp Rearview mirror
JP2012006593A (en) * 2000-11-06 2012-01-12 Semiconductor Energy Lab Co Ltd Vehicle
JP2004294647A (en) * 2003-03-26 2004-10-21 Sharp Corp Display element
US20100097469A1 (en) * 2008-10-16 2010-04-22 Magna Mirrors Of America, Inc. Interior mirror assembly with display

Also Published As

Publication number Publication date
US20180056876A1 (en) 2018-03-01
EP3260328A1 (en) 2017-12-27
JP2016190535A (en) 2016-11-10
EP3260328A4 (en) 2018-03-14
CN107406036B (en) 2019-10-15
JP6464479B2 (en) 2019-02-06
US10391942B2 (en) 2019-08-27
WO2016157767A1 (en) 2016-10-06

Similar Documents

Publication Publication Date Title
US6447132B1 (en) Day/night HUD backlighting system
JP5842419B2 (en) Head-up display device
US7092007B2 (en) Vehicular forward-vision display system decreasing luminance with decreasing vehicle speed
US8582052B2 (en) Discrete LED backlight control for a reduced power LCD display system
US5214413A (en) Head-up display apparatus for vehicular display
EP1466785B1 (en) Vehicle periphery monitoring device, vehicle body construction and vehicle imaging device
US20040202001A1 (en) Vehicle information displays
US6590561B1 (en) Computer program, method, and device for controlling the brightness of a display
CN101401024B (en) Comprise the vehicle rearview assembly of high intensity display
DE19541542B4 (en) Automatic anti-glare rearview mirror system
US20060158715A1 (en) Variable transmissivity window system
EP1413470B1 (en) Vehicle display device
JP2014098934A (en) Variable transmission window system
US4690508A (en) Liquid crystal closed-loop controlled mirror systems
US20090096937A1 (en) Vehicle Rearview Assembly Including a Display for Displaying Video Captured by a Camera and User Instructions
TW200835392A (en) Brightness control of a status indicator light
JP2001125067A (en) Liquid crystal display device
JPH0680052A (en) Mirror system having remotely actuated continuously variable reflectance mirror
US7333269B2 (en) Display device for vehicles
BRPI0507382A (en) transparent pane with a field of vision which can be darkened on a part of its surface, use of a transparent pane and process for controlling a functional element which is in the form of an all-solid electrochromic surface element in a transparent pane
WO2006082883A1 (en) Display device, electronic device and camera
US20030025078A1 (en) Vehicle visibility assist device and method
JP2006285064A (en) Image display apparatus
JP4486822B2 (en) Meter panel and device having meter panel
US7438451B2 (en) Ambient light based illumination control

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant